diff --git a/.bashrc b/.bashrc
index d735e44..a4474ff 100644
--- a/.bashrc
+++ b/.bashrc
@@ -236,7 +236,7 @@ alias log='git lg'
 alias ciam='git ci -am'
 alias cia='git ci -a'
 alias ga='git add -p'
-alias head='git rev-parse --verify HEAD'
+ghead() { git rev-parse --verify "${1:-HEAD}"; }
 
 alias be="bundle exec"
 alias rs="rails server -b 127.0.0.1"